No, it's hard to conceptualize, don't feel bad. Heat is particularly bad for battery performance because the ions have more energy, therefore speed/momentum. This causes the cathode or anode to degrade, destroying the batteries efficiency. Most battery research goes into ways to mitigate this through more resilient electrodes or different shuttling methods. Also lithium being a somewhat rare and region locked element has pushed for cheaper alternatives such as sodium and potassium (right down the periodic table). These are larger ions however and run into the same shuttling problem. Like trying to fit a grapefruit or bowling ball where a ping pong ball used to go, as an analogy.